23770221 has 8 divisors (see below), whose sum is σ = 31744224. Its totient is φ = 15821520.

The previous prime is 23770207. The next prime is 23770259. The reversal of 23770221 is 12207732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23770221 - 2⁵ = 23770189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23770191 and 23770200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23770321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4011 + ... + 7976.

It is an arithmetic number, because the mean of its divisors is an integer number (3968028).

Almost surely, 2^23770221 is an apocalyptic number.

It is an amenable number.

23770221 is a deficient number, since it is larger than the sum of its proper divisors (7974003).

23770221 is a wasteful number, since it uses less digits than its factorization.

23770221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12651.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 23770221 is about 4875.4713618275. The cubic root of 23770221 is about 287.5264086642.

Adding to 23770221 its reverse (12207732), we get a palindrome (35977953).

The spelling of 23770221 in words is "twenty-three million, seven hundred seventy thousand, two hundred twenty-one".